Saw-sharpening implement.



No. 738,872. PATENTED SWEPT. 15, 1903.

G. Y. ANDERSON.

SAW SHARPENING IMPLEMENT.

\ APPLICATION FILED APR. 10. 1902.

N0 MODEL. 2 SHEETS-SHEET l No. 738,872. PATENTED SEPT. 15,- 1903.

. I G. Y. ANDERSWN'. I

SAW SHARPENING IMPLEMENT.

APPLICATION FILED APR. 10, 1902. no MODEL. 2 SHEETS-SHEET 2.

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file held fiatwise therein.

UNITED STATES I i atented Septem'ber 15, 1909;. V

SAW'SHARPENING IMPLEMENT.

SPECIFICATION forming part of Letters Patent No. 738,872, dated September 15, 1.903. d Application filecl April 10, 1902. Serial No. 102.270. (No model.)

T0 at whom, it may concern:

Be it known that I, GUSTAF Y. ANDERSON, a citizen of the United States, residing at Dyea, in the Territory of Alaska, have invented a certain new and useful Saw-Sharpening Implement, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to saw-sharpening implements, and particularly to that class known as saw-jointers, in which the file may be placed either edgewise or fiatwise in the upper part of the tool. v

The object of the invention is to provide novel means for holding the file in either of its two positions, adjusting the frame of the implement with relation to the sawblade, so as to obtain the proper angle or relation between the file, straight-edge, and the sawteeth; also, to provide uovelmeans for gaging the rakers and for detachably securing a separable straight-edge to the body of the implement, so that the implement and straightedge may be simultaneously operated with precision in the hands of a comparatively unskilled person.

With the above and other objects in view the invention consists in the novel construe tion, combination, and arrangement of parts hereinafter fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a perspective view showing the jointer and straight-edge coupled together with a file held flatwise between the same. Fig. 2 is a view in elevation of the combined jointer and gage. Fig. 3 is a vertical crosssection taken about centrally through the combined jointer and gage on the line 3 3 of Fig. 1 and showing a Fig. 4 is a similar View showing the file held edgewise. Fig. 5 is an elevation showing a modified form of straight-edge, also showing a section of the saw. Fig. 6 isa horizontal section taken on the line 8 8 of Fig. 2. Fig. 7 is an enlarged detail vertical section through the straightedge, showing the gage-pin and adjusting means.

Similar numerals and letters of reference designate corresponding parts in all the figures of the drawings.

Referring to the drawings, A represents the body of the sharpening implement, constituting a combined jointer and gage; B, the straightedge; G, a saw, and D the file.

The implement in its general construction resembles closely that illustrated and described in Patent No. 672,691, granted April 23, 1901, and a detailed description thereof is therefore unnecessary other than to clearly disclose the nature and operation of the imof the frame itself, are all fully described in my prior patent, above referred to.

.The novel features of the present invention reside, first, in making the lateral projections 2 of greater length and preferably equal in length to the Width of the file when held edgewise with respect to the frame of the implement, the file being held directly beneath and against the projections 2. The frame of the implement is also provided with the usual vertical flanges or supports 3 for the file when arranged fiatwise against the implement, the file being held by means of the file-clamp 4, the clamp itself being held against the frame by means of a set-screw 5.

In carrying out the present invention the side flanges of the file-clamp are recessed or cut away, as shown at 6, so as to receive the file fiatwise and in a slightly-inclined position, leaving on the file'clamp the usual filerests 7 to bear against the lower edge of the file for securing the same in place. The fileclamp is also provided with a vertical slot 8 of suificient length to permit the clamp to be adjusted up and down far enough to permit the usual file-rest 8' on the top end of the clamp to overhang or project over the upper edge of the file. The file-clamp is adjusted up and down by means of a screw 9, provided with a collar 10, having a swiveled engagement with the lower part of the frame of the implement and a threaded engagement with the lower portion of the file-clamp.

, The implement is provided with the usual longitudinal flange 11, located between the top and bottom of the implement, while the lower or bottom flange 12 is cut away at .opposite sides of the center to leave one or more cylindrical lugs 13 and bearing-points 14, adapted to abut against the saw-blade. Oneof the lugs 13 is internally threaded to receive a gage-screw 15, which passes transversely through the frameand may be adjusted so as to project more or less beyond the end of the lug 13, to adapt the device to saws of different thicknesses. The end of the screw, together with the other lug 1'3 and bearing-points 14, form a series of rests for I the saw-blade, said rests being dressed off on an even plane andadapted to bear against the saw-blade ata point below the teeth. On the dressed end of the lug 13 and screw 15 marks or grooves 16 are formed, which serve when brought into alinement with each other to indicate when the screw has been turned sufficiently to bring the end of the screw into the same plane with the dressed extremity of the lugs 13 and bearing-points 14. A jamnut 17 may be associated with the screw 15 on the opposite side of the frame of the implement for holding the proper adjustment when secured. By adjusting the screw 15 the angle of presentation of the saw-blade to the file may be varied.

The straight-edge B is made separable from the body of the implement and is seen to comprise a straight smooth face 18, adapted to rest on the points of the cutting-teeth of the saw, the straight-edge being further provided with a similar straight surface 19, adapted to bear against the side of the file and a small beveled edge 20, which gives the necessary clearance to the filings to permit the straightedge B and the fileD in the jointer A to pass uninterruptedly by theteeth on that side of the saw next to the file. The straight-edge B is further provided with transverse ribs or stops 21 on the upper side adjacent to the ends, which-ribs or stops are adapted to be embraced by the projections 2 of the implement, so as to prevent relative longitudinal movement between the jointer and straightedge when both are simultaneously operated.

.. This enables the jointer A while holding the file D and the straight-edge B to be drawn same time. 22 designates a spring-clasp for coupling Ihestraight-edge to the jointer, said clasp being shown in the formof a strip of spring metal having one extremity bent downward to .form a lip 23, which hooks over the top of the gage-plate, while the opposite end of the clasp is bent downward, as shown at 24, and thence inward toform a book 25, which enters an opening 26 in the shank of the straight-edge.

The straight-edge shown in Figs. 1 and 3 is by preference composed of glass, a glass 1 straight-edge face.

straight-edge having advantages overa metal one in that greater smoothness and hardness of surface is obtained with economy in manufacture and permanent absence of rust, and in order that the straight-edge may be used with accuracy on the saw-teeth points for gag ing them to an even height in the manner described in my prior PatentNo. 663,322, issued December 4, 1900, I provide the staight-edge with a shank 27, extending downward substantially at right angles, or on account of crosscut-saws being usually thinner toward the back than at the teeth the shank 27 is preferably slightly inclined to correspond with the difference in the thickness of the saw, so as to have the face 18 perfectly level transversely on the saw-teeth. The lower part of the shank 27 is sufficiently wide to steady the straight-edge in longitudinal alinement on the saw-teeth points.

The shank 27 is provided at the top with an opening 26, through which the points of the rakers may be viewed, and another vertical opening 31 extends through the body of the straight-edge in line with the opening 26 to receive a plug 32, rounded or cylindrical at the top and square, or substantially so, at the bottom. The plug is hollow and the cylindrical portion thereof is internally threaded to receive ahollow screw-socket 33 with a screwdriver slit at the top to provide for adjustment up and down within the plug 32. The screwsocket 33 is also provided with ascrew-threaded opening, having finer threads than those in the plug 32, and a correspondingly-threaded gage-pin 34 is inserted in said opening in the socket 33. The lower portion of the gage-pin is made square to agree with the shape of the plug 32, thereby preventing relative rotative movement between the gage-pin and plug.

tremity of the gage-pin may without turning be raised and lowered accurately to the desired extent for gaging the rakers of the saw. The plug 32 is preferably held in place in the straight-edge by cement, and the face of the gage-pin is dressed on an even plane with the By reason of the inability of the gage-pin to turn accuracy of adjustment is secured regardless of the angle at which the pin may be inserted in the straight edge, as the lower face of the pin always remains at the same angle and is always parallel with the lower face of the straight-edge. along the saw-teeth points at one and the From the foregoing description it will be fiseen that the projection of the file-rest at the gtop of the file-clamp over the edge of the file 1 will not impair the efficiency of the clamp by reason of the side file or side jointer being in the upper part of the implement.

No inconvenience is caused by the increased length of the slot in the file-clamp, for theclamp-screw, having a swiveled engagement with the frame, fully controls the up-anddown movement of the clamp, and when the file is removed the clamp can be lowered and held out of the way by the clam p-screw while Thus by turning the screw-socket 33 the lower exthe implement is being used for gaging the rakers. By means of the screw 15 the file D can be easily and quickly brought into the desired angle of relation to the saw-teeth, while the straight-edge B, resting on the sawteeth points, enables the file to be drawn along the sides of the saw-teeth at an even and proper height even when operated by an unskilled person. The screw 15 can be turned and adjusted to compensate for variation in the thickness of the saw, it being understood that the blade of the saw is of less thickness than the teeth. It will also be noted that by reason of the gage-pin being unable to turn or shift a true and even adjustment of the extremity of said gage-pin is insured for the purpose of fitting up the rakers, while at the same time there is nothing to interfere with a clear view of the cutting-teeth.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-- 1. In a saw-sharpening implement, in combination, a frame having file-engaging projections and inclined file-seats, a file-clamp recessed to receive the flat side of a file at a slight angle to the plane of the frame, an overhanging projection at the top of the clamp forming a broad and substantial file-rest to prevent variation in the angle of the file when replacing it in its other position, a gage-screwadjustable transversely through the lower part of the implement and adapted to bear against the saw-blade for regulating the relative angle between the file and the saw-teeth, and means for accurately adjusting and holding said gage-screw.

2. In a saw-sharpening implement, in combination, a frame having file-engaging projections and inclined file-seats, a file-clamp recessed to receive the flat side of a file at a slight angle to the plane of the frame, a filerest projecting from the top of the clamp, means permitting the top file-rest to be adjusted to a position above the upper edge of the file so that said projection may engage the file when placed edgewise in the implement, a gage-screw adjustable transversely through the lower part of the implement and adapted to bear against the saw-blade for regulating the relative angle between the file and the teeth of the saw, a series of lugs or bearing-points having their extremities arranged in the same plane, and indicating de vices by means of which the gage-screw may rable straight-edge for supporting the implement and file at the proper height, said straight-edge having a smooth hard face for contact with the points of the saw-teeth, a

second face to bear against the file, a beveled edge to permit the file to readily pass the sawteeth points, stops adapted to be embraced by the file-engaging projections on the frame of the implement, and means for holding the straight-edge firmly against the file.

4:. In a saw-sharpening implement, in combination, a frame having file-engaging projections, a file-clamp recessed to receive a fiat file held at a slight angle to the plane of the frame, a gage-screw passing through the lower portion of the frame and adapted to bear against the saw-blade, a straight-edge provided with two straight surfaces at substantially right angles to each other, an intervening bevel edge or corner for the purpose specified, stops on the straight-edge adapted to be engaged by the file-engaging projections on the frame, and a clasp for coupling the implement and straight-edge together.

5. In a saw-sharpeningimplement,the combination withthe frame of the jointer, of a detachable straight-edge provided with an opening, and a clasp for securing the straightedge to the jointer, said cl asp having one end in engagement with said opening, substantially as described.

6. In asaw-sharpeningimplement, the combination with the frame of the jointer, of a detachable straight-edge provided with an opening, and a clasp for securing the straightedge to the jointer, said clasp being provided with bent extremities to engage the jointerframe and the opening in the straight-edge.

In testimony whereof I affix my signature in presence of two witnesses.

GUSTAF Y. ANDERSON.

Witnesses:

W. F. EOKHART, GEO. E. WEBsTER. 

